ASTM D3575: Testing Flexible Cellular Polyolefin Materials — Guide
Digi-Test digital durometer measuring Shore A rubber hardness with precision readoutWhat Is ASTM D3575?
ASTM D3575 — Standard Test Methods for Flexible Cellular Materials Made from Olefin Polymers — is a comprehensive standard that defines a suite of test methods for evaluating the physical, mechanical, and performance properties of flexible polyolefin foam materials. These materials — including crosslinked polyethylene (XLPE) foam, polypropylene foam, and EVA foam — are used in packaging, thermal insulation, cushioning, automotive components, sports equipment, and medical device packaging.
ASTM D3575 consolidates multiple test procedures for olefin polymer foams in a single standard, providing a consistent, industry-accepted testing framework.
Why Polyolefin Foam Testing Is Important
Flexible polyolefin foams serve diverse performance functions — energy absorption in packaging and safety padding, thermal insulation in HVAC and cryogenic applications, vibration damping in industrial and automotive uses, and buoyancy in marine applications. Each application demands specific combinations of density, compressive properties, tensile behaviour, water absorption, and thermal stability. ASTM D3575 testing provides the data needed to select, specify, and quality-control polyolefin foam materials for these applications.
Key Test Methods in ASTM D3575
Density (Method A)
Density measurement by Archimedes’ displacement or direct dimensional measurement and weighing is the most fundamental foam property. It correlates with mechanical performance — denser foams are generally stiffer and stronger — and determines material cost efficiency.
Tensile Strength and Elongation (Method B)
Die-cut dumbbell specimens are tested in tension to measure tensile strength and elongation at break. These properties are particularly important for foams used in sealing, gasketing, and flexible packaging applications.
Tear Resistance (Method C)
Tear resistance is measured using a die-cut notched specimen pulled in tension. It is relevant for foam products that must resist tearing during installation, use, or removal.
Compression Force Deflection (CFD) / Compressive Stress-Strain (Method D)
CFD testing measures the compressive stress at defined deflection levels (typically 25% and 50% compression). It characterises the foam’s stiffness and energy absorption under compressive loading — critical for packaging and cushioning applications.
Compression Set (Method E)
A specimen is compressed to a defined deflection, held for a defined period at a specified temperature, released, and the residual permanent deformation (set) is measured after recovery. Low compression set is essential for gasketing and sealing applications.
Water Absorption (Method F)
Immersion and buoyancy methods measure the water absorption of polyolefin foam specimens, relevant for marine, HVAC, and outdoor applications.
Thermal Stability (Method G)
Dimensional change testing after oven ageing at defined temperatures assesses the heat resistance and dimensional stability of polyolefin foams for thermal insulation and high-temperature applications.
Industrial Applications by Foam Type
Crosslinked XLPE foam (Volara, Trocellen): Packaging insert material, automotive interior pads, floatation devices, sports mat padding — characterised by CFD, density, compression set.
EVA foam: Shoe soles, yoga mats, protective padding, marine deck covering — characterised by hardness (Shore C), CFD, tensile.
Polypropylene bead foam (EPP): Automotive bumper energy absorbers, packaging for electronics and automotive parts — characterised by energy absorption efficiency and density.
Conclusion
ASTM D3575 is the primary standard for evaluating the physical and mechanical performance of flexible polyolefin foam materials such as XLPE, EVA, polypropylene foam, and other olefin-based cellular products. It provides a comprehensive set of standardised test methods covering density, tensile strength, tear resistance, compression force deflection, compression set, water absorption, and thermal stability. These properties are essential for product development, specification, and quality control across packaging, insulation, automotive, sports, and medical applications.
By following ASTM D3575, manufacturers can ensure consistent foam performance, compare different material grades, and verify suitability for specific service environments. The standard is widely used for research, acceptance testing, and production quality assurance of flexible closed-cell olefin polymer foams.
Why Choose Infinita Lab for ASTM D3575 Foam Testing?
Infinita Lab provides comprehensive ASTM D3575 testing for flexible polyolefin foam materials through our nationwide accredited polymer and materials testing laboratory network. Our foam testing specialists design test programmes covering density, CFD, tensile, compression set, water absorption, and thermal stability.
Looking for a trusted partner to achieve your research goals? Schedule a meeting with us, send us a request, or call us at (888) 878-3090 to learn more about our services and how we can support you.
Frequently Asked Questions (FAQs)
Which materials are covered under ASTM D3575? It applies to flexible closed-cell foams made from polyolefin materials including XLPE foam, EVA foam, polypropylene foam, and olefin blends.
Why is this test important? It helps determine whether the foam meets the required strength, cushioning, compression, water resistance, and thermal stability for its intended application.
What is Compression Force Deflection (CFD)? CFD measures the compressive stress required to deform the foam by a specified percentage, commonly 25% or 50%, and is critical for cushioning applications.
What does compression set measure? Compression set measures the permanent deformation remaining after the foam has been compressed and allowed to recover.
Is water absorption included in this standard? Yes, ASTM D3575 includes water absorption testing for applications exposed to moisture or outdoor conditions.
